package cn.demo.framework.config;

import cn.demo.framework.config.properties.PermitAllUrlProperties;
import cn.demo.framework.security.filter.JwtAuthenticationTokenFilter;
import cn.demo.framework.security.handle.AccessDeniedHandlerImpl;
import cn.demo.framework.security.handle.AuthenticationEntryPointImpl;
import cn.demo.framework.security.handle.LogoutSuccessHandlerImpl;
import jakarta.annotation.Resource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.Customizer;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.authentication.configuration.EnableGlobalAuthentication;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

/**
 * spring security配置
 *
 * @author ruoyi
 */
@EnableWebSecurity
@Configuration
@EnableMethodSecurity
@EnableGlobalAuthentication
public class SecurityConfig {

    /**
     * 认证失败处理类
     */
    @Resource
    private AuthenticationEntryPointImpl unauthorizedHandler;

    /**
     * 权限不够处理类
     */
    @Resource
    private AccessDeniedHandlerImpl accessDeniedHandler;

    /**
     * 退出处理类
     */
    @Resource
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Resource
    private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /**
     * 跨域过滤器
     */
    @Resource
    private CorsFilter corsFilter;

    /**
     * 允许匿名访问的地址
     */
    @Resource
    private PermitAllUrlProperties permitAllUrl;

    /**
     * 由于 Spring Security 创建 AuthenticationManager 对象时，没声明 @Bean 注解，导致无法被注入
     * 通过覆写父类的该方法，添加 @Bean 注解，解决该问题
     */
    @Bean
    public AuthenticationManager authenticationManagerBean(AuthenticationConfiguration authenticationConfiguration) throws Exception {
        return authenticationConfiguration.getAuthenticationManager();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Bean
    protected SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
                // 开启跨域
                .cors(Customizer.withDefaults())
                // CSRF禁用，因为不使用session
                .csrf(AbstractHttpConfigurer::disable)
                // 禁用HTTP响应标头和禁止frame嵌套
                .headers(c -> c
                        .cacheControl(HeadersConfigurer.CacheControlConfig::disable)
                        .frameOptions(HeadersConfigurer.FrameOptionsConfig::disable)
                )
                // 自定义的处理器
                .exceptionHandling(c -> c
                        .authenticationEntryPoint(unauthorizedHandler)
                        .accessDeniedHandler(accessDeniedHandler))
                // 基于 token 机制，所以不需要 Session
                .sessionManagement(c -> c.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                // 过滤请求
                .authorizeHttpRequests(c -> c
                        .requestMatchers("/login","/error","/api/login/*", "/register", "/captchaImage").permitAll()
                        .requestMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**").permitAll()
                        .requestMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs/**", "/druid/**").permitAll()
                        .requestMatchers(permitAllUrl.getUrls().toArray(new String[0])).permitAll()
                        .anyRequest().authenticated()
                )
                // 添加Logout filter
                .logout(c -> c.logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler))
                // 添加JWT filter
                .addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class)
                // 添加CORS filter
                .addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class)
                .addFilterBefore(corsFilter, LogoutFilter.class);
        return httpSecurity.build();
    }

    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

}
